1u << VIRTIO_NET_F_CTRL_RX | \
1u << VIRTIO_NET_F_CTRL_VLAN | \
1u << VIRTIO_NET_F_CSUM | \
+ 1u << VIRTIO_NET_F_HOST_TSO4 | \
+ 1u << VIRTIO_NET_F_HOST_TSO6 | \
1u << VIRTIO_NET_F_MRG_RXBUF | \
1u << VIRTIO_RING_F_INDIRECT_DESC | \
1ULL << VIRTIO_F_VERSION_1 | \